The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 19, 2017
Filed:
Dec. 26, 2014
Aisin Aw Co., Ltd., Anjo-shi, Aichi-ken, JP;
Yoshihiro Maeda, Nagoya, JP;
Nobuyuki Hirai, Anjo, JP;
Masamichi Yamaguchi, Anjo, JP;
Yoshimitsu Hyodo, Nishio, JP;
Kenichi Tsuchida, Nishio, JP;
Hiroyuki Kutsubo, Nagoya, JP;
AISIN AW CO., LTD., Anjo, JP;
Abstract
A hydraulic control device that includes a solenoid valve capable of supplying a first engagement pressure to the first engagement element; and a first cut valve that is interposed in an oil passage from the solenoid valve to the first engagement element and is capable of cutting off supply of a hydraulic pressure to the first engagement element, wherein only the first engagement pressure and a second engagement pressure serve as hydraulic pressures that act such that the first cut valve cuts off the supply of the hydraulic pressure to the first engagement element, and the first cut valve is switched so as to cut off the supply of the hydraulic pressure to the first engagement element when the first engagement pressure and the second engagement pressure are simultaneously supplied to the first engagement element and the second engagement element, respectively.